Gardner Spring MB0875-031 Belleville Disc Spring

Product Description

The GARDNER SPRING MB0875-031 is a Belleville disc spring designed to deliver high load capacity in a compact axial footprint. With an outer diameter of 0.875 inches, an inner diameter of 0.442 inches, and an overall height of 0.059 inches, this spring generates a load of 308.3 pounds at its rated deflection range of 0.032 to 0.045 inches. Constructed from steel, it provides consistent spring force in applications where space is limited and precise clamping or preload force is required. Maintenance technicians, mechanical assemblers, and trade professionals working with bolted assemblies or precision fastening systems are the typical installers.

This Belleville disc spring is suited for use in bolted flange connections, valve assemblies, bearing preload applications, and electrical or mechanical equipment requiring controlled axial force. Its 7/16-inch bolt size compatibility makes it a practical fit for standard fastener configurations across industrial, HVAC, plumbing, and electrical equipment assemblies. The spring can be stacked in series to increase deflection or in parallel to increase load, depending on application requirements. It is sold in packages of 12 with a minimum order quantity of 1.

Key Features

• High load capacity of 308.3 pounds within a deflection range of 0.032 to 0.045 inches
• Compact 0.875 inches outer diameter suits tight installation spaces
• Steel construction for durability under repeated loading cycles
• Compatible with 7/16-inch bolt size fastener configurations
• Stackable in series or parallel arrangements to tune load and deflection
• Packaged in quantities of 12 for bench stock or service kit use

Compatibility

Designed for use with 7/16-inch bolt size fastener assemblies. Consult application load-deflection requirements before substituting in existing assemblies.

Installation Notes

Belleville disc springs are installed by qualified mechanical technicians or trade professionals familiar with fastener preload requirements. Always de-energize or depressurize the assembly before servicing components. Confirm the correct stacking orientation, series versus parallel, to achieve the intended load and deflection per the assembly specification. Do not exceed the rated deflection range, as flattening the spring past its design limit will permanently reduce load performance.